When _______ different cultures, we often pay attention only to the differences without noticing the many similarities.
A.comparing B.compare C.compared D.being compared
——Where is Peter ? I can't find him anywhere.
——He went to the library after breakfast and _____ his essay there ever since.
A.has written B.has been writing C.had written D.were writing
（2015·福建） the students came from different countries, they got along quite well in the summer camp.
A. While B. Unless
C. Since D. Until
The trips usually start on Friday night and end on Saturday night, ____ them practical for students and workers.
A.make B.made C.making D.to make
（2015·四川）Little Tom sat ________watching the monkey dancing in front of him.
A.amaze B.amazing
C.amazed D.to amaze
（2015·重庆）Last year was the warmest year on record, with global temperature 0.68 ℃ ________ the average.
A.below B.on
C.at D.above
